Method and apparatus for testing a subscriber's line circuit in a packet switched multiplexed data/voice communication system
US4660194A · kind A · utility
17Cited by
42References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1984 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Apr 5, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a packet switched multiplexed data/voice communication system, timed loopbacks along a subscriber line are effected by purposely extinguishing or killing the DATA carrier sewing the line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.